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Measurement and Instrumentation

Measurement and Instrumentation
A resistor of 10kΩhms with 5% tolerance is connected in parallel with a 5kΩhms resistor of 10% tolerance. What is the tolerance limit for the parallel network?

5%
8.33%
6.67%
10%

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Measurement and Instrumentation
Basically potential meter is a device for

Comparing two voltages
Measuring a current
Measuring a voltage
Comparing two currents

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 3%
 2%
 1%
 4%

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Measurement and Instrumentation
A spring controlled indicating instrument has a deflection of 90deg for maximum current I. The corresponding deflection for a gravity controlled instrument is

0°
120°
90°
30°

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Measurement and Instrumentation
To measure the flux, devices used are based on

Piezo-electric effect
Photo-voltaic effect
Hall effect
Voltaic effect

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Measurement and Instrumentation
In a moving iron meter, the deflecting torque is proportional to

Square of the current through the coil
Squareroot of the measurand
Current through the coil
Sine of the measurand

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